package com.wc.AlgoOJ_homework.aloj练习赛.D_括号补全;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.LinkedList;
import java.util.StringTokenizer;

/**
 * @Author congge
 * @Date 2024/5/8 20:45
 * @description http://43.138.190.70:8888/p/GDCPC4
 */
public class Main {
    static FastReader sc = new FastReader();
    static PrintWriter out = new PrintWriter(System.out);
    static int N = 210;
    static char[] s = new char[N];
    static boolean[] st = new boolean[N];
    static int n;
    static char[] stack = new char[N];
    static int top = 0;

    public static void main(String[] args) {
        n = sc.nextInt();
        s = (" " + sc.next()).toCharArray();
        LinkedList<Character> q = new LinkedList<>();
        for (int i = 1; i <= n; i++) {
            q.add(s[i]);
            if (s[i] == ')') {
                int idx = i - 1;
                while (idx >= 1 && s[idx] == '(' && st[idx]) {
                    idx--;
                }
                if (idx >= 1 && s[idx] == '(') {
                    st[idx] = true;
                    st[i] = true;
                }
            }
        }
        for (int i = 1; i <= n; i++) {
            if (!st[i]) {
                if (s[i] == ')') q.addFirst('(');
                else q.add(')');
            }
        }
        for (char c : q) out.print(c);
        out.flush();
    }
}

class FastReader {
    StringTokenizer st;
    BufferedReader br;

    FastReader() {
        br = new BufferedReader(new InputStreamReader(System.in));
    }

    String next() {
        while (st == null || !st.hasMoreElements()) {
            try {
                st = new StringTokenizer(br.readLine());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return st.nextToken();
    }

    int nextInt() {
        return Integer.parseInt(next());
    }

    String nextLine() {
        String s = "";
        try {
            s = br.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return s;
    }

    long nextLong() {
        return Long.parseLong(next());
    }

    double nextDouble() {
        return Double.parseDouble(next());
    }

    // 是否由下一个
    boolean hasNext() {
        while (st == null || !st.hasMoreTokens()) {
            try {
                String line = br.readLine();
                if (line == null)
                    return false;
                st = new StringTokenizer(line);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return true;
    }
}
